3/8 in. Brass Ball Valve, Male x Female, UL Listed | 948171
3/8 in. Brass Ball Valve, Male x Female, UL Listed | 948171
✓ In stock at our distribution warehouses — typically ships within 1–2 business days.
Flat-rate shipping, nationwide- Orders under $100: $9.95
- $100 – $499.99: $14.95
- Orders $500+: quoted — real freight for your order, not a flat guess
Volume order or crossing a competitor part number? Request a quote — usually answered the same business day.
The 3/8 in. forged brass full-port ball valve (part 948171) delivers quarter-turn shutoff with Male × Female NPT ends — the male end threads directly into equipment ports, tanks, or bushings while the female end accepts standard pipe, eliminating an extra nipple. UL 842 and UL 258 listed, rated 600 psi WOG non-shock and 150 psi WSP saturated steam, with a solid hard-chrome-plated brass ball and virgin TFE seats. Each valve individually tested.
Technical Specifications
| Manufacturer Part Number (MPN) | 948171 |
| Nominal Size | 3/8 in. |
| Valve Type | Full-port ball valve, forged brass |
| End Connections | Male NPT × Female NPT, ANSI B1.20.1 |
| Pressure Rating | 600 psi WOG non-shock (42 bar) |
| Steam Rating | 150 psi WSP saturated steam (10.34 bar) |
| Temperature Range | −20°F to 248°F (−40°C to 120°C) |
| Listings | UL 842, UL 258 |
| Port | Full port (full bore) |
| Operation | Quarter-turn lever, yellow vinyl-insulated handle; flow both directions |
Dimensions
| Bore Diameter | 0.394" |
| End-to-End Length | 2.094" |
| Height (center to top) | 1.89" |
| Handle Length | 3.543" |
| Weight | 0.33 lb |
Materials of Construction
| Body | Forged Brass (C37700) |
| End Cap | Brass |
| Ball | Brass, hard chromium plated |
| Stem | Brass, bottom-entry, blow-out-proof, pressure-retaining |
| Seats, Stem Packing & Thrust Washer | Virgin TFE |
| Handle | Heavy-duty plated carbon steel, yellow vinyl insulator |
Performance & Testing
- Full-port bore — minimal pressure drop
- Each valve individually pressure tested
- Suitable for the full range of liquids and gases
- Fast 1/4-turn open/close, low operating torque, bidirectional flow
- Adjustable stem packing gland — field-serviceable seal
- Not lead-free — for potable water supply lines, choose a lead-free certified valve (see Lead-Free Valves in our Valves menu)
Other Sizes in This Series
Brass Ball Valve, Male × Female NPT, UL Approved, 600 WOG Full Port (1/4"–2"). Jump to another size or add it straight to your cart:
| Size | Part # | Price | Cart |
| 1/4 in. | 948170 | $8.49 | Add to cart |
| 3/8 in. (this page) | 948171 | $8.99 | — |
| 1/2 in. | 948172 | $10.99 | Add to cart |
| 3/4 in. | 948173 | $15.99 | Add to cart |
| 1 in. | 948174 | $24.99 | Add to cart |
| 1-1/4 in. | 948175 | $33.99 | Add to cart |
| 1-1/2 in. | 948176 | $50.99 | Add to cart |
| 2 in. | 948177 | $74.99 | Add to cart |
Typical Applications
Gas, water and oil distribution lines (UL 842 flammable liquids, UL 258 LP-gas shutoff), street-valve style installs where the male end threads into a fitting or tank bushing, fuel transfer, compressed air, and general industrial shutoff. Not for potable water supply (not lead-free).
Cross-References & Interchange
Replacing another brand's 3/8 in. UL-listed MxF brass ball valve? Match nominal size, end connections (Male × Female NPT), and WOG rating for a direct fit — or send us your part number and we will confirm the interchange. Need a padlockable handle? See the 3/8 in. MxF locking-handle ball valve (948171L). Need female threads on both ends? See the 3/8 in. 600 WOG full-port ball valve (940172).
Availability
In stock — ships direct from the manufacturer, typically 1–3 business days.